1  /** Used to stand-in for `undefined` hash values. */
 2  var HASH_UNDEFINED = '__lodash_hash_undefined__';
 3  
 4  /**
 5   * Adds `value` to the array cache.
 6   *
 7   * @private
 8   * @name add
 9   * @memberOf SetCache
10   * @alias push
11   * @param {*} value The value to cache.
12   * @returns {Object} Returns the cache instance.
13   */
14  function setCacheAdd(value) {
15    this.__data__.set(value, HASH_UNDEFINED);
16    return this;
17  }
18  
19  module.exports = setCacheAdd;